Change or Spoof a MAC Address in Windows Every network interface card (NIC) has a unique MAC Address (Media Access Control address). This applies to all types of network cards, including Ethernet cards and WiFi cards. The MAC Address is a six-byte number or 12-digit hexadecimal number number that is used to uniquely identify a host on an Ethernet network.
An example of a MAC address is 1F-2E-3D-4C-5B-6A and it falls into the Layer 2 networking protocol of the OSI model. In today’s networks, a MAC address is converted to a Layer 3 protocol address, such as an IP address, by ARP, or Address Resolution Protocol. Read my post on how to find your MAC address if you don’t know it.

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